Optimal Lévy-flight foraging in a finite landscape.
J R Soc Interface
; 12(104): 20141158, 2015 Mar 06.
Article
em En
| MEDLINE
| ID: mdl-25631566
ABSTRACT
We present a simple model to study Lévy-flight foraging with a power-law step-size distribution [P(l) ∞ l-µ] in a finite landscape with countable targets. We find that different optimal foraging strategies characterized by a wide range of power-law exponent µopt, from ballistic motion (µopt â 1) to Lévy flight (1 < µopt < 3) to Brownian motion (µopt ≥ 3), may arise in adaptation to the interplay between the termination of foraging, which is regulated by the number of foraging steps, and the environmental context of the landscape, namely the landscape size and number of targets. We further demonstrate that stochastic returning can be another significant factor that affects the foraging efficiency and optimality of foraging strategy. Our study provides a new perspective on Lévy-flight foraging, opens new avenues for investigating the interaction between foraging dynamics and the environment and offers a realistic framework for analysing animal movement patterns from empirical data.
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MEDLINE
Assunto principal:
Comportamento Apetitivo
/
Comportamento Animal
/
Voo Animal
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article